// LeetCode 836 Rectangle Overlap.cpp

class Solution {
public:
    bool isRectangleOverlap(vector<int>& rec1, vector<int>& rec2) {
        return !(rec1[0] >= rec2[2] ||
            rec1[1] >= rec2[3] ||
            rec1[2] <= rec2[0] || 
            rec1[3] <= rec2[1]);
    }
};